This is a pretty cool free program I found about a year ago, it converts MIDI files into VOS file and plays like Beatmania, you can chose and play different instruments in the midi or use the Vos Creator mix them then play them all together. Btw right now VOS went Online in Korea, that means you can play it online with other players, each plays an instrument, now you can feel what it's like to be in an Orchestra!!! It also plays Beatmania files too, I'll upload some later.